TW201722258A - Cross-type grass-mowing wire providing high grass-mowing capability and efficiency at low cost and high structural strength - Google Patents

Abstract

A cross-type grass-mowing wire comprises a wire body and a plurality of teeth formed on two opposite sides of the wire body. Each tooth is defined with a tooth peak, a tooth valley, and a plurality of transverse sections formed between the tooth peak and the tooth valley at different heights. The wire body substantially formed with a cross-shaped transverse section is defined with a first span and a second span, in which a span ratio of the first span to the second span is between 0.5:1 and 1.3:1.

Description

Cross mowing line

The present invention relates to a mowing line, and more particularly to a mowing line applied to a convoluted cutter head.

A mower with a mowing line is used, which fixes a rotary mower with a cutterhead to one of the appropriate lengths of the wire body, and the other part of the wire body is exposed outside the cutter head for cutting .

In general, the cross-section of the mowing line is mostly circular, and a blade is formed on the side as a cutting portion. For example, in the Republic of China, the new patent No. M484297 discloses that the mowing line is hollow to have a better resistance structure, and the cross section is formed into a polygonal shape so that the corner edge serves as a cutting edge, and the cutting edges extend along the longitudinal axis of the mowing line. The grass leaves are cut and slashed; but the grass leaves are soft, but the force is slightly slashed and then reversed. Therefore, the cutter speed must be fast enough, and the edge of the mowing line must be sharp enough to be able to be reversed when the blades are too late to reverse. Stop your waist. For example, U.S. Patent No. 7,607,233 B2 discloses that the mowing line forms a spine similar to a saw (see column 3, line 15) and forms a continuous bend or a plurality of tapers on the spine or Tooth and so on, to improve the mowing ability; however, the concave and convex design on the spine can concentrate the force on the convex part when applying force to the blade, and improve the mowing ability to some extent, but the blade itself is too thin. The convex portion on the spine is also too small, and in the case where the force is concentrated, the spine and its convex portion are not resistant to wear.

Therefore, the current industry is in urgent need of a mowing line that can take care of high mowing ability and wear resistance.

It is an object of the present invention to provide a cross-type mowing line that combines lower cost with higher structural strength.

It is an object of the present invention to provide a cross-type mowing line with high mowing ability and efficiency.

The object of the present invention is to provide a cross-type mowing line which is wear-resistant and resistant to hitting, has a long product life and high reliability.

To this end, the present invention provides a cross-shaped mowing line that is longitudinally and flexible, having a longitudinal axis, and a cross-shaped transverse direction defined by any one of the positions along the longitudinal axis and perpendicular to the longitudinal axis. a cross section; each cross section defines a horizontal axis and a vertical axis; wherein: each cross section has a substantially rectangular central portion having a horizontally extending projection extending outward along the horizontal axis and having an outwardly extending vertical axis along the vertical axis Each of the vertical protrusions is formed with a plurality of teeth toward the protrusion; the vertical protrusion is projected on the horizontal axis to form a width, and the vertical protrusion is projected on the vertical axis to form a height; and the horizontal protrusions of each of the cross sections have a uniformity. Shape; each of the vertical projections of each cross section has a uniform width and a different height.

To this end, the present invention provides a cross-shaped mowing line that is elongated and flexible and includes: a body, two first ribs, and two second ribs. The body defines a longitudinal axis and a uniform one-section; the section has a plurality of adjacent sides. The two first ribs are disposed on two opposite sides of the main body along the longitudinal axis; each of the first ribs is formed with a plurality of teeth. The second ribs are disposed on the other two opposite sides of the main body along the longitudinal axis; each of the second ribs has a uniform width.

10‧‧‧Line

12‧‧‧ Subject

14‧‧‧First rib

16‧‧‧second rib

20‧‧‧ cross section

22, 22a‧‧‧ main section

221, 221a, 222a‧‧‧ side

24, 241, 242‧‧‧ first rib section

26‧‧‧Second rib section

28‧‧‧Reinforced angle rib section

30‧‧‧ teeth

31, 31a‧‧‧ tooth peak

32‧‧‧ tooth valley

33, 34‧‧‧ side edge

35‧‧‧Department of restraint

S1‧‧‧first span

S2‧‧‧Second span

Z‧‧‧ vertical axis

X‧‧‧ horizontal axis

Y‧‧‧ vertical axis

S1‧‧‧first span

S11‧‧‧Maximum first span

S12‧‧‧Minimum first span

S2‧‧‧Second span

W1‧‧‧ first width

W2‧‧‧ second width

θ ‧‧‧ angle

W, W1‧‧‧ tooth width

H, H1‧‧‧ tooth height

1 is a partial perspective view of a first embodiment of a cross-type mowing line of the present invention; 2A is a cross-sectional view along section line 2A-2A of FIG. 1; FIG. 2B is a cross-sectional view along section line 2B-2B of FIG. 1; FIG. 2C is a second embodiment of cross-type mowing line of the present invention. 3 is a cross-sectional view of a third embodiment of a cross-type mowing line according to the present invention; and FIG. 4 is a cross-sectional view of a fourth embodiment of a cross-shaped mowing line according to the present invention; 1 is a side view of a fifth embodiment of a cross-shaped mowing line of the present invention; and FIG. 7 is a side view of a sixth embodiment of a cross-shaped mowing line of the present invention; 7 is a cross-sectional view along section line 7A-7A; Fig. 8 is a top view of Fig. 1; Fig. 9 is a partial perspective view of a cross-sectional view of Fig. 1 of the cross type mowing line of the present invention; A partial sectional perspective view of a seventh embodiment of the cross-shaped mowing line of the present invention; and FIG. 11 is a side view of the tenth embodiment.

Please refer to the first embodiment of the cross-type mowing line of the present invention. The cross-shaped mowing line is longitudinally long and flexible, and has a first body 10 2, the body 10 has a longitudinal axis Z, and a cross-section 20 defined along the longitudinal axis Z and perpendicular to the longitudinal axis Z, each of which defines a horizontal axis X and a vertical axis Y, and each cross section 30 has a substantially rectangular central portion extending outward along the horizontal axis X The horizontally protruding portion has a vertical protruding portion extending outward along the vertical axis Y; the vertical protruding portion projected on the horizontal axis X forms a width, and the vertically protruding portion projected on the vertical axis Y forms a height; each of the cross sections 30 The horizontal projections have a uniform shape; each of the vertical projections of each cross section 30 has a uniform width and a different height.

In detail, the wire body 10 defines a longitudinal axis Z and a horizontal axis X and a vertical axis Y which are orthogonal to the longitudinal axis Z and orthogonal to each other. The wire body 10 is formed with a plurality of teeth 30 in a vertical projection, each of which defines a tooth peak 31, a tooth valley 32, and a plurality of breaks formed by the tooth peak 31 to the valley 32 to form different heights on the cross section 30. The horizontally protruding portion of each cross section 30 has a uniform height because no teeth are provided. Thereby, the process is reduced and the structural surface is increased as compared with the conventional one, and the cost and the strength can be further reduced.

In addition, as shown in FIG. 2A, the cross-sectional surface 20 can further define two opposing vertical protrusions as a first span S1 and two opposite horizontal protrusions as a second span S2; FIG. 2A shows that A span S1 varies with the height of the opposing teeth 30, and the teeth 30 have a higher structural strength regardless of whether the peaks 31 or the valleys 32 have the same width. Therefore, when the cross-type mowing line of the present invention can make grass blades enter the trough 32 when the grass is hit, the grass leaves are restrained by the tooth flanks on both sides of the trough 32 or restrained or engaged, and the blade leaves when the cutter head continues to rotate. Can not be bent smoothly and be slashed. The first span S1 and the second span S2 intersect the longitudinal axis Z and simultaneously pass through the longitudinal axis Z on the cross section 20 and intersect. The cross section 20 further defines a first width W1 corresponding to the first span S1 and a second width W2 corresponding to the second span S2; that is, the width of the vertical projection projected on the horizontal axis X is the first The width W1; the width of the horizontal projection projected on the vertical axis Y is the second width W2. The first width W1 and the second width W2 do not intersect the longitudinal axis Z, and the first width W1 and the second width W2 of the cross section 20 are uniform. The plurality of teeth 30 are continuously formed along the longitudinal axis Z along the longitudinal body 10 At least two opposite sides of the axis Z; in this embodiment, the plurality of teeth 30 on opposite sides are symmetrical to each other. The general specifications of the mowing line include 1.65 mm, 2.0 mm, 2.4 mm, 2.7 mm, 3.0 mm, 3.3 mm, 3.7 mm, 4.0 mm; since the first span S1 has a change, and the second span S2 is fixed, Controlling the span ratio of the first span S1 to the second span S2 is maintained between 0.5:1 and 1.3:1, so that the line body 10 can be maintained at the original specification level in the process of forming the cross-shaped cross section 20. Within. Moreover, in the general specification of the mowing line, in addition to the smaller gauge pitch (for example, 1.65 mm, 2.0 mm), it may be limited by the process capability, and the span of the first span S1 and the second span S2 may be further increased. The ratio is controlled between 0.5:1 and 1.2:1.

More specifically, the body 10 includes a body 12, two first ribs 14 disposed on opposite sides of the body 12 along the longitudinal axis Z, and two opposite sides disposed along the longitudinal axis Z of the body 12. Two second ribs 16. The body 12 has a uniform main section 22, and the main section 22 has a plurality of adjacent side edges 221. The plurality of teeth 30 are formed on each of the first ribs 14; each of the first ribs 14 defines a plurality of first rib sections 24 formed by the crests 31 to the valleys 32 at different heights; The first rib section 24 has a uniform width and has a first width W1 which is equal to the corresponding sides. Each of the second ribs 16 defines at least one second rib section 26; each of the second rib sections 26 has a uniform width and has a second width W2 that is equal to the corresponding sides. The cross section 20 includes a main section 22 of the main body 12, two first rib sections 24 on the opposite sides 221 of the main section 22, and two second ribs on the other two opposite sides 221 of the main section 22. Section 26; for ease of description, the two pairs of opposite sides 221, 222 of the main section 22 are represented by imaginary lines, and so on. The length of the first rib section 24 passing through the longitudinal axis Z and projected on the vertical axis Y is defined as the first span S1, the length of the second ridge section 26 passing through the longitudinal axis Z and projected on the horizontal axis X Defined as the second span S2.

Referring to Figures 2A and 2B, the cross section 20 is in the form of a vertically staggered cross, from the tooth peak The projections 31 to valleys 32 form a plurality of sections of different heights on the cross section 20. The valleys 32 are preferably flush with the surface of the body 12, and the peaks 31 are preferably equally symmetrical on opposite sides. The cross section 20 defines an angle θ defined by one of the first ribs 14 clockwise to the adjacent second rib 16 . In the present embodiment, the angle θ is a right angle; and in the third diagram, the angle θ is an acute angle. At the moment when the blade is restrained by the tooth flanks on both sides of the valley 32 or restrained or engaged, the edge of the second rib 16 can be simultaneously contacted.

In addition, the main section 22 of the body 12 may be a polygon having a quadrangular shape. Referring to FIG. 2C, the body 12 can be a cylinder having a main cross section 22a having a circular shape. The first and second rib sections 24 and 26 are respectively located at the side 221a of the main section 22a. 222a, and the sides 221a, 222a each have a predetermined radius of curvature.

In addition, the cross-shaped mowing line of the present invention, the main body 12 and the ribs 14, 16 may be made of a single material such as nylon 6, or a nylon copolymer; or an outer hard and tough composite material. The outer layer is resistant to impact and the inner layer is more tolerated, and the service life can be improved. For example, the main body 12 is made of nylon 6, or nylon copolymer, and the ribs 14 and 16 are made of nylon 66 and nylon. 12, or made of nylon elastomer and other materials.

The cross-shaped mowing line further includes a plurality of reinforcing corner ribs; the reinforcing corner ribs are disposed on the main body 12 along the longitudinal axis Z, and connect the first ribs 14 and each of the second ribs 16; Referring to Figure 4, a plurality of reinforcing corner rib sections 28 are interleaved with the first and second rib sections 24, 26 to further increase the structural strength of the body 10. The reinforcing corner ribs may be formed with a plurality of corresponding recesses (not shown) along the plurality of valleys 32 of the first ribs 14.

In addition, in the side view and top view of Figures 5 and 8, the cross-shaped mowing line of the present invention further defines a longitudinal section (not shown) along the longitudinal axis Z; each tooth 30 defines a tooth width W along the longitudinal section. One tooth height H, the aspect ratio of each tooth 30 (hereinafter referred to as W/H) is between 1:1 and 2:1. Due to the line body The 10 gauge is determined by the first and second spans S1, S2, for example, when one of the first and second spans S1, S2 has a span of 4.0 mm (hereinafter expressed in mm), that is, the mowing line diameter The specification is 4.0mm; the height H of each tooth 30 and the height of the body 12 itself will affect the first span S1 of the wire body 10, and the W/H is controlled between 1:1 and 2:1, which helps each The teeth 30 form a restraining portion 35 that can easily restrict or engage the blade of grass, so that the restraining portion 35 is too large to restrict the blade, or the restraining portion 35 is too small to accommodate the blade.

Further, each of the teeth 30 defines two opposite side edges 33, 34 along the longitudinal section, and the size of the restraining portion 35 can be determined by the opposite side edges 33, 34 of the respective teeth 30. Referring to Figure 5, the two opposite side edges 33, 34 are symmetrical in a straight line. Controlling the size of the restraining portion 35 can be determined by the tooth peaks 31 of the respective teeth 30: the tooth peaks 31 are provided with a platform (not shown) to increase the strength of each of the teeth 30, as shown in Fig. 5; the peaks 31a can be peaked. The teeth 30 are closely arranged as shown in Fig. 6.

Since the two opposite sides of the body 10 form the teeth 30, which helps the mowing line to be assembled to the cutter head, the user can reverse the mowing line of the invention on the cutter head without damage to the mowing line. Implementation. In addition, referring to Fig. 7, the teeth 30 on the opposite sides can be staggered; and at the same time, referring to Fig. 7A, since the teeth on the two sides are staggered, in order to specifically describe the ratio, the respective teeth 30 on the opposite sides are projected. On the cross section 20, the distance between the tooth peak 31 and the tooth peak 31 on the opposite sides is defined as a maximum first span S11, and the distance between the valley 32 and the valley 32 on the opposite side is defined as a minimum first Span S12. In other words, the maximum first span S11 is the projection of the cross section 20, from the top end of the first rib section 241 of the specific tooth 30 on one side to the first rib of the adjacent rear tooth 30 of the opposite side. The distance between the top ends of the faces 242; the minimum first span S12 typically does not include the calculation of the rib profile, which is easier to understand as the distance of the body 12 itself from the projection of the cross section 20. Wherein, the maximum first span S11 and the second span S2, and the minimum first span S12 and the second span S2, the span ratio thereof should also conform to the range of 1.3:1~0.5:1, that is, S11/S2 :S12/S2=1.3/1: 0.5/1.

Referring to Fig. 9, which is the control aspect of Fig. 1, the aforementioned plurality of teeth 30 are also formed on the other two opposite sides of the body 10, i.e., at the second ribs 16. Structurally, the second rib 16 is formed with teeth that are less (inferior) to the structural strength relative to the mowing line of Figure 1 of the present invention; however, compared to the conventional, the ninth figure is still the first due to the cross section 20. The second ribs 14, 16 all maintain a uniform width and have a high structural strength.

Referring to Figures 11 and 12, the continuous plurality of teeth 30b are disposed on the two first ribs 14, the single tooth peak 31b determines the tooth height H1, the two adjacent tooth peaks 31b determine the tooth width W1, and the two opposite side edges 33b, 34b are symmetric. The concave arc causes the valley 32b to be curved, and the restraining portion 35b forms a large accommodation space.

In summary, the cross-type mowing line of the present invention can at least provide the following effects: (1) the plurality of teeth mainly provide the function of restraining the blade of grass, and the function of cutting is provided second; The edge of the edge, and each rib section maintains a uniform width, which can strengthen the structural strength of each rib, thereby improving the mowing ability and efficiency; (2) further adopting an outer hard and tough composite material to make the outer layer wear-resistant Impact resistance, inner layer bending tolerance is higher, and has longer product life and higher reliability.

The present invention and its specific embodiments are not limited to the above-described examples, and the concepts may be substituted or changed by the concept and scope of the claims.

10‧‧‧Line

12‧‧‧ Subject

14‧‧‧First rib

16‧‧‧second rib

30‧‧‧ teeth

31‧‧‧ tooth peak

32‧‧‧ tooth valley

Claims (20)

A cross-shaped mowing line that is longitudinally and flexible, having a longitudinal axis, and a cross-section that is substantially perpendicular to one of the longitudinal axes and perpendicular to the longitudinal axis; The cross section defines a horizontal axis and a vertical axis; wherein: each of the cross-sectional masks has a substantially rectangular central portion along which the horizontally extending protrusions extend outwardly along the vertical axis Forming, in the protruding portion, each of the vertical protruding portions with a plurality of teeth; the vertical protruding portion projecting on the horizontal axis forms a width, and the vertical protruding portion is projected on the vertical axis to form a height; the horizontal direction of each of the cross-sections The protrusions have a uniform shape; each of the vertical protrusions of each of the cross sections has a uniform width and a different height. The cross-shaped mowing line of claim 1, wherein each of the horizontal axes has a height toward the protrusion; the height of the horizontal protrusions on the two sides and the sum of the center portions, and the height of the protrusions on the two sides The sum of the central parts is between 0.5 and 1.3. The cross-shaped mowing line of claim 2, wherein the horizontal protrusion of each horizontal axis has a height; the sum of the height of the horizontal projections on the two sides and the central portion, and the height of the protrusions on the two sides The sum of the central parts is between 0.5 and 1.2. A cross-shaped mowing line according to claim 1, wherein the body is made of nylon 6, or a nylon copolymer. The cross-shaped mowing line of claim 1, wherein the body comprises a main body, two vertical projections, and two horizontal projections; the main system is made of nylon 6, or a nylon copolymer, etc. The ribs are made of nylon 66, nylon 12, or nylon elastomer. The cross-shaped mowing line of claim 5, wherein the line body comprises a plurality of reinforcing corner ribs; The strong rib is disposed on the main body along the longitudinal axis, and connects each of the first ribs and each of the second ribs. A cross-shaped mowing line according to claim 1, wherein the cross section defines an angle defined by the first rib clockwise to the second rib, the angle being a right angle. The cross-shaped mowing line of claim 1, wherein the cross section defines an angle defined by the first rib clockwise to the second rib, the included angle being an acute angle. The cross-shaped mowing line of claim 1, wherein the line body defines a longitudinal section; each of the teeth defines a tooth width and a tooth height along the longitudinal section, and the tooth has an aspect ratio of 1:1~2 Between:1. The cross-shaped mowing line of claim 9, wherein each of the teeth has a peak along a tooth peak of the longitudinal section. A cross-shaped mowing line is longitudinally and flexible, comprising: a body having a longitudinal axis and a uniform one-section; the section having a plurality of adjacent sides; a rib, disposed along the longitudinal axis on two opposite sides of the body; each of the first ribs is formed with a plurality of teeth; and two second ribs are disposed along the longitudinal axis on the other two opposite sides of the body; Each of the second ribs has a uniform shape. The cross-shaped mowing line of claim 11, wherein: each of the teeth defines a tooth peak and a tooth valley; each of the first ribs defines a plurality of first ribs formed by different heights from the tooth peak to the valley. Each of the first ribs has a uniform width and has a first width equal to each of the corresponding sides; and each of the second ribs defines at least one second rib profile and has A second width is equal to the corresponding sides. The cross-shaped mowing line of claim 11 further includes: a cross section defining a horizontal axis and a a vertical axis and including the section of the body, the two first rib sections and the second second rib sections; the cross section having a first span and a second span intersecting through the longitudinal axis a length from which the two first rib sections pass through the vertical axis and projected on the vertical axis is defined as the first span, and the two second rib sections pass through the vertical axis and are projected thereon The length of the horizontal axis is defined as the second span. The cross-shaped mowing line of claim 13, wherein the ratio of the span of the first span to the second span is between 0.5:1 and 1.3:1. The cross-shaped mowing line of claim 11, wherein the main body has a rectangular cross section; each of the first ribs abuts the two second ribs, and each of the second ribs abuts the two first ribs . The cross-shaped mowing line of claim 11, wherein the main body has a polygonal cross section, wherein a first rib abuts at least one of the second ribs. The cross-shaped mowing line of claim 11 further comprising a plurality of reinforcing corner ribs; the reinforcing corner ribs are disposed on the main body along the longitudinal axis, and connect the first ribs and the second ribs. The cross-shaped mowing line of claim 11, wherein the plurality of teeth of one of the first ribs are interlaced with the plurality of teeth of the other first rib. A cross-shaped mowing line according to claim 11, wherein the main system is made of nylon 6, or a nylon copolymer. For example, the cross-shaped mowing line of claim 11 further defines a longitudinal section; each of the teeth defines a tooth width and a tooth height along the longitudinal section, and the aspect ratio of each tooth is between 1:1 and 2:1. between.